Posted By: 
Al C.risafulliEasy.
1977 Topps Rod Carew.  The first superstar I pulled out my first pack of baseball cards.  I was amazed.  ROD CAREW.  He was the best player on earth, in my mind.  And there he was, with a first baseman's glove, waiting for a throw, in living color.
1964 Topps Billy Williams.  I bought this card at a show when I was about 10 years old.  It was the most beautiful old card I'd ever seen, condition-wise.  I bought it and immediately put it in plastic; never touched it again because I didn't want to wreck it.  I still have it.  If I submitted it for grading, it would get a 5.
'81 Fleer Craig Nettles error.  When I was a kid we went through a tough financial stretch.  My mom had to work three jobs.  Nettles was my hero as a kid.  For my birthday, she bought this card for me for $17, when $17 was like a million bazillion dollars to us.  I had a plastic case that came with a medal I won in little league.  The case was the exact size of a baseball card.  I took the medal out (and lost it) and put the card inside the case, along with the foam that protected the medal.  It's still there.  Today, it is worth a million bazillion dollars to me.
T206 Rube Waddell portrait.  Not just any one, though, the one that was my first T206, bought it for a dollar at my card shop when I was a kid.  It's clipped on all four corners and completely wrinkled to death, as if it went through the wash or something.  It's got a Sweet Caporal back.  It's my favorite baseball card.
1960 Topps Tex Clevenger.  This card was the oldest card in my neighborhood when I was a kid.  At one point or another, everyone in the neighborhood owned it - whoever owned it would use it as trade bait when somebody else had a card that we REALLY wanted.  Nobody could say "no" to the Tex Clevenger.  Gradually we all grew up and moved away.  Evidently I made the last big trade, because I have it.
All the other cards I have are just paper.  Those five, though, are valuable.
-Al